摘要
巴润铁矿是包钢集团主要的原料生产基地,但是现有的大区爆破技术远远无法满足包钢集团钢铁生产用矿需求。为提高矿山产能,该矿通过在大区爆破的基础上进一步增大爆区规模,采用超大区爆破技术进行现场试验。该爆区长度为630 m,宽度为60～150 m,在爆破炮孔数量、一次用药量及爆破范围等方面大于普通爆破大区。通过设置合理的爆破参数、装药结构并加强现场施工管理最终实现了超大爆区爆破技术在巴润铁矿的成功应用。现场实践表明:采用超大区爆破方案后,爆破振动速度为1. 018 9～2. 736 9 cm/s,大块率为10%,爆破后冲作用小,爆破成本相比于传统爆破降低15%,较传统爆破降低单耗10%,节约穿孔米道13%,减少设备避炮时间60%。综合分析表明:超大爆区爆破技术的应用,有助于大幅度提高巴润铁矿的矿石生产能力,降低单位原矿开采成本,从而实现矿山降本增效的目的。
Barun Iron Mine is the main raw material production base of Baotou Iron and Steel Group,but the existing large-area blasting technique can not meet the demand of Baotou Iron and Steel Group for iron and steel production.In order to improve the production capacity of the mine,based on the regional blasting,the scale of blasting area is further increased,the super-large area blasting technique is proposed.The length of the blasting area is 630 m,its width is 60~150 m,it is larger than the ordinary large blasting area in number of blasting holes,amount of primary charging and blasting range.By setting reasonable blasting parameters,charging structure and strengthening site construction management,the successful application of the super-large blasting technique in Barun Iron Mine is finally realized.The filed test data show that after taking the super-large blasting technique,the blasting vibration velocity is 1.018 9~2.736 9 cm/s,the block rate is 10%,the blasting impact is small,the blasting cost is 15%lower than that of traditional blasting,10%lower than that of traditional blasting,13%lower than that of perforated meters,besides that,the equipment blasting avoidance time is reduced by 60%.The comprehensive analysis results indicated that application of the super-large blasting technique is help for improving the production capacity of Barun Iron Mine,reducing the unit cost of raw ore mining and achieving the purpose of decreasing cost and increasing efficiency of the mine.
作者
师文强
顾春雷
张波
Shi Wenqiang;Gu Chunlei;Zhang Bo(Barun Mining Company,Inner Mongolia Baotou Steel Union Co.,Ltd)
出处
《现代矿业》
CAS
2018年第11期181-184,189,共5页
Modern Mining
关键词
露天铁矿
超大区爆破
降本增效
爆破参数
爆破振动
Open-pit iron mine
Super-large area blasting
Cost decreasing and benefit increasing
Blasting parameter
Blasting vibration
